#28379E#28379E

#28379E is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.6% C 0.166 H 270.3°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#28379E
RGB	rgb(40, 55, 158)
HSL	hsl(232, 60%, 39%)
HSV	hsv(232, 75%, 62%)
CMYK	cmyk(74.7%, 65.2%, 0%, 38%)
CIE-LAB	lab(28.51, 30.94, -57.58)
CIE-LCH	lch(28.51, 65.36, 298.25°)
OKLab	oklab(39.61% 0.0008 -0.1664)
OKLCH	oklch(39.61% 0.166 270.3)
XYZ	xyz(8.4107, 5.6512, 32.9887)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28379E #9E8F28

analogous

#28729E #28379E #54289E

triadic

#28379E #9E2837 #379E28

tetradic

#28379E #9E2872 #9E8F28 #289E54

square

#28379E #9E2872 #9E8F28 #289E54

split-complementary

#28379E #9E5428 #729E28

monochromatic

#0F153C #1C266D #28379E #374ACC #6876D9

Accessibility & contrast

On white

9.86

#28379E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#28379E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28379E

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28379E	#FFFFFF	#000000	##FFFFFF
##28379E	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A1

Deuteranopia (green-blind)

#003E9C

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #28379e;
/* rgb */ color: rgb(40, 55, 158);
/* oklch */ color: oklch(39.6% 0.166 270.3);

Tailwind

colors: {
  custom: {
    50: '#746ebc',
    500: '#28379e',
    950: '#000000',
  },
}

SCSS

$custom: #28379e;
$custom-light: #746ebc;
$custom-dark: #000000;

JSON

{
  "hex": "#28379e",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 158
  },
  "hsl": {
    "h": 232.373,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.39606,
    "c": 0.16644,
    "h": 270.3
  },
  "luminance": 0.05652
}

Semantic roles & 50–950 ramp

primary

#28379E

secondary

#BFB363

accent

#CF45E3

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #28379E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →